Rifle projectile · Sierra · Pro-Hunter · .257 / 25 Cal
Sierra .257 117gr Pro-Hunter 1640
.257 / 25 Cal · 117 grain · Pro-Hunter
Estimates
Performance.
TheSierra .257 117gr Pro-Hunter 1640is a rifle projectile manufactured bySierra. With a bullet diameter of 0.257 inches and weight of 117 grains, this projectile is designed for medium game applications.
Key Specifications
| Specification | Value |
|---|---|
| Manufacturer | Sierra |
| Product Line | Pro-Hunter |
| SKU | 1640 |
| Type | Rifle |
| Diameter | 0.257" |
| Weight | 117 grains |
| Ballistic Coefficient (G1) | N/A |
| Ballistic Coefficient (G7) | N/A |
| Sectional Density | 0.253 |
Performance Estimates
Based on typical load data for .257 / 25 Cal:
| Metric | Estimate |
|---|---|
| Muzzle Velocity | ~3038 fps |
| Muzzle Energy | ~2397.3 ft-lbs |
| Effective Range | ~500 yards |
Suitable Applications
This projectile is commonly used for: deer, antelope, sheep.
About the Ballistic Coefficient
The G1 ballistic coefficient ofN/Aindicates how well this projectile retains velocity in flight. A higher BC means better wind resistance and less drop at distance.
Sectional Density
With a sectional density of0.253, this projectile provides good penetration for medium game.
Suitability
Suitable game.
Compatibility
Compatible cartridges.
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